Union



(No Model.) V

'- L. ONDERDONK.

SEWING MACHINE.

No. 591,420. Patented Oct. 12,1897.

III, 4

za waaaai UNITED STATES: PATENT OFFICE.

LANSING ONDERDONK, OF BOST N, MASSACHUSETTS, ASSIeNoR. To THE UNION SPECIAL SEWING MACHINE COMPANY, OF CHICAGO, ILLINOIS.

SEWING-ZZMACHINE.

SPECIFICATION forming-part of Letters Patent No. 591,420, dated October 12, 1897.

-To all whom it may concern.-

Be it known that I, LANSING ONDERDONK, a

citizen of the United States, residing at Bos-; I ton,in the county of Sufiolk, State of Mas- 5 sachusetts, have invented certain new and? useful Improvements in Sewing-Machines, of

movements for entering and receding from the needle-loop and otherwise cooperating therewith to make a chain or double-chain stitch accordingly as the looper does or does not carry a thread.

The invention consists in the matters hereinafter described, and referred to in the appended claims.

The invention is illustrated in the accompanying drawings, in which- Figure 1 is a sectional plan view of a portion of a sewing-machine embodying my invention. Fig. 2 is a cross-section through the looper-frame and inclined pin. Fig. 3 is a detail view of one of the pins and its bearing-block, and Fig. 4 is a view of another form of machine embodying the invention.

In the drawings the machine is similar to that shown in an application heretofore filed by me, (Case H,) April 6, 1896, Serial No.

3 5 586,312, and the frame thereof is indicated at F.

A is the main shaft, journaledtherein and extending transversely of the work-support ing arm'of the machine. Said shaft is pref- 4o erably composed of two straight portions, as

This construction of actuating-shaft is particularly applicable to what are known as side-wheel cylinder-machines. It is obvious, however, that one straight portion and Application filed August 6, 1896. Renewed August 23, 1897. Serial No. 649,244. (N0 model.)

' its inclined arm 1 might be dispensed with in certain classes of machines.

The looper carrier or frame B has on one .side the wings 3 3, between which is an opening for the shaft A. Extending between the wings are properly-spaced pins 4 4, the dis- .tance between said pins and between said wings being sufficient to enable the crank 2- to pass freely and yet have a proper bearing to actuate the looper-carrier and give it the four motions.

To avoid undue friction and provide easy and noiseless operation of the parts, the pins 4 4 may be and preferably are provided with bearing-blocks 5, journaled thereon and having concaved faces to conform to the outline of the crank 2.

The carrier or frame Bhas a laterally-extending tubular portion 6, in which is detachably and adjustably secured the looper-supporting shaft 7, upon the outer end of which the loopers 8 are secured.

In Fig. 4 I have shown a construction in WhichAis the driving-shaft. 1 is an inclined arm supported thereby. 2 is an inclined pin or rod attached to the arm 1 and the loopercarrier or frame B does not have the tubular portion for the attachment of a shaft 7, as

in Figs. land 2, but the loopers are secured directlyin sockets on said carrier or frame B said carrier having oppositely -'extending trunnions, as shown. As far as the Wings and connecting-pins are concerned the carrier shown in Fig. 4 is the same in construction as that shown in Figs. 1 and 2.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is 4 1. Alo oper mechanism for sewing-machines comprising an actuating device, a looper-carrier, and operative connecting means between the actuating device and the looper-carrier, the said means including a pair of wings and transverse pins connecting the same, substantially as described.

2. A looper mechanism for sewing machines,comprising an actuating device, a looper-carrier, and operative means between the said device and carrier for imparting to the latter a right-line reciprocation and transverse oscillation, said means includingapair of wings and transverse pins connecting the same, substantially as described.

3. Alooper mechanism for sewing-machines comprising a main shaft, a looper-shaft, and operative connections between the two, the latter comprising a frame having wings, and connecting transverse pins; substantially as described.

4. Alooper mechanism forsewing-machines,

comprising a main shaft, a looper-shaft and l latter comprising a frame, having wings and transverse connecting-pins, and an inclined j crank for actuating the frame; substantially as described.

6. A looper mechanism for sewing-machines comprising a main shaft, a looper-shaft and operative connections between the two, the latter comprising a frame having wings and connecting transverse pins the latter having bearing-blocks journaled thereon; substantially as described.

7. The herein-described looper-operating mechanism for sewing-machines comprising the driving-shaft, the looper-supporting carrier or frame an inclined crank driven from the driving-shaft, wings on said carrier or frame embracing the inclined crank, and pins extending transversely of the wings, between which pins the inclined crank also works; substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

LANSING ONDERDONK.

Witnesses:

A. II. HATCH, F. S. FAwcETT. 

